Projection display apparatus



Sept. 4, 1951 F. EPWELLER 2,566,710

PROJECTION DISPLAY APPARATUS Filed Oct. 20, 1949 4 Sheets-Sheet 1 IN VEN TOR.

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PROJECTION DISPLAY APPARATUS Filed Oct. 20, 1949 4 Sheets-Sheet 2 IN VEN TOR.

p 1951 F. E. WELLER 2,566,710

PROJECTION DISPLAY APPARATUS Filed Oct. 20, 1949 4 Sheets-Sheet 5 INVENTOR. flan/6 E iVk/lir Sept. 4, 1951 F. E. WELLER PROJECTION DISPLAY APPARATUS 4 Sheets-Sheet 4 Filed Oct. 20, 1949 19mm; PM

Patented Sept. 4, 1951 UNITED STATES PATENT?OFFICE momma DISPLAY APPARATUS "fnrahk Weller; Bloomfield, N. J1, assetsto Trans- Lu'xporporation, New York, N."Y.; a cr porationbf Delaware Atpiicaeoamaba 20, 1949; Serial Nb:122,408 4Claims. (CI. 88-24) This invention relates to a structurally and functionally improved display apparatus and especially an apparatus for use in the television industry.

display apparatus which may be disposed in operative relationship to the camera or receiving employed in a television system and by means of g which light images of imprinting, a time display, miniature or full-sized objects, eta, maybe desirably received on the mosaic of the television camerato transmit reproductions of thematter so displayed.

A further object is that of furnishing an assembly of this type by means of which, for example, indicia on a narrow tape, or a broad web may bedisplayed in additionto the display of slides miniature or full-sized objects, the face of a clock, etc., and regardless of whether the pictures or imprinting occur on a light-transpar-= ent member or an Opaque surface; a single assembly of apparatus achieving the elected result It is an object of the invention to furnish a i I l maybe anll desired manner, for example, bylmeans otpin and hook connections.as indicatsgl-at I2. Openings I3 are formed in the adjacent, walls of the casings ID and II and are aligned when the casings are coupled to eachj otheri aCasingIO also mounts casing sectionsfl l and 25 which may. be secured against displacement as indicatedat I6. Sections I I4 and i5 may iorm a subsidiary enclosure and mounted upon a bracket 24 conveniently supat the will and under the control of the operator.

Another object is that of furnishing an ap- V f paratus which will include relatively few parts, each of individually simple and rugged design V such parts being capable of ready assemblage and furnishing a unitary mechanism functioning over long periods of time with freedom from all n difficulties.

I With these and other objects in mind, reference is had to the attached sheets of drawings I illustrating, practical embodiments of the invention and in which: v7 7 Fig. 1 is a sectional plan view of an apparatus is typ a Fig. 2 is a sectional side view of thesame; Fig. 3 is a transverse sectionalview taken along -the lines 3 -3 and in the direction of the arrows as indicated in Fi 2; 1

Fig. 4 is a sectionalplan view of the'rear por- J tion of an apparatus embodying an alternative N structure to'that shown in the earlier figures;

35 rays emanating from the different bulbs'ZZ and ported by a casing portion I5 and so that light rays passing through the opening I! maybe reflected in line with the axis oi lens 20. .To provide a current of, cooling air ablower 25 may be mounted within casing In to direct itsblastpast ,th front of light 22 and generally across the openinggli njThelower face. of casing Ill may be "formedwithan' opening 26 through which the heated'air maybedischarged.

Casing I I .may be shifted into position when it is desired to display objects by reflecting light rays. Such an objectwill .be visible through the opening I3. Itwillbe, illuminated by the light converging upon the aperture. Frequently a series of such'objects. are 'to'be sequentially displayedf To that end a'ishaft 21 may be rotatably mounted to turn on 'a vertic'alaxis within casing I I. This shaftma'y supp'or'ta turn table 28 havmg a" series of compartments; The shaft may have attachedtd-ita Geneva cross'which is in- Fig. 5 is a sectional side view taken along the lines 5-5 and in the direction of the arrows as indicated in Fig. 4;

Fig. 6 isga perspective view ofa clock-mounting panel which-may form a part of the assembly; and

Figsfll, 8 and 9 are similar views showing re- Referring primarily to Figs l, 2, and 3, it will be seen that the numeral l0 indicates what might be termed the main casing of the device and which casingis conveniently of rectangular configura- 'termitten tly advanced-pm; pin and cam mechanism; this assembly having'be'e'n indicatedat 29. The pin an cam ared'river eofivemenu by a worm 3D mountedppon'a shaft carrying a worm Wheel driven'by a'w 'rm 3 IT "The latter is rotated h I spectively plates to be employed Where the indicia on a narrow tape, broad web or series of slides is o be is lay I mounted upon-a suitable *tion"; 'K'rem'ovableor' subsidiary'casihg portion functioning thetur'n any event that a single by a motor 32. Itisappareht that with t e latter will be intermittently display its "comparte therei I the I V w h WF t -be displayed t s maybe c nv nient framed With t e p tures I3; Sup 1 an pbjectinay be a'clock 33 pin s With n ca in is t u .1 and 1 3a ide 35 is 'dis'p'os'edan'd" whi'cnniiay havea'"width' such advanced "se'duentially ments and aay'tt" ct that it will properly cooperate with a narrow tape passing to a take-up reel 36. The guide 35 is disposed upon the opposite side of the casing from reel 36 and may receive the tape from, for example, an imprinting machine (not shown). Reel 36 is conveniently rotated by a spring belt 31 which passes around pulleys secured to the shaft of reel 36 and shaft 38 respectively. Shaft 38 is rotated by a drive element which is moved by a driving assembly 40 operated by a drive 39 mounted by shaft 4! extending from motor 42. Shaft 38 may also have secured to it a gear 43 meshing with a similar gear secured to a shaft 44. A belt and pulley connection 45 serves to connect this shaft with shaft ii mounting a takeup reel 47, conveniently disposed adjacent the outer ends of easing l4. Disposed adjacent the opposite end of this casing is a guide assembly 48. The latter and the take-up reel 41 cooperate with a broad web and serve to guide and feed the same through the casing. That web, in common with the tape fed past guide 35 onto reel 36 may be transparent. It will ordinarily bear indicia imprinted in sequential lines extending parallel to the line of printing appearing upon the narrow tape.

The broad web has been indicated at 59 in Fig. 2 and the transparent, narrow tape has been indicated at 50 in Fig. 3. As also indicated in the drawings various auxiliary, guiding, aligning and tensionin mechanisms may be associated with the apparatus toassure that the webs or tapes are properly supported and moved. When the matter upon a narrow tape is to be displayed, then a masking plate formed with a narrow aperture 52 as in Fig. 7 may be employed. When the indicia upon a broad Web'is to be displayed, the plate may take the form of a body 53 formed with a relatively wide aperture 54. These plates may also be provided with guiding extensions 55 and curved lip portions 56. Additionally, they may be furnished with positioning lugs 5? so as to be maintained against displacement with respect to the casing portions l4 and I5 and as shown substantially in line with the plane of juncture of these portions. One or the other of these plates may be thus disposed according to whether a web or a tape is being employed. If neither of these units are being employed, then a clock-mounting plate 58 havingsimilar posi= tioning lugs 51 may be disposed at the point indicated and include, for example, a transparent face 59 through which light rays may pass to silhouette the indicia upon its face as well as the outline of the clock hands traversin such face.

As is obvious, this clock-mounting plate 58, may be disposed as indicated in dotted lines in Fig. 2 in the event that simultaneous clock and tapecarried indicia images are to be displayed.

Above the station at which the masking plates 5| and 53 are disposed, a mounting 66 is pivotally supported as at BI and carries a condenser lens assembly 62. The masking plate and this assembly will be optically aligned with the opening i1. Above the condenser assembly a source of illumination 63 is provided. This may conveniently embrace an incandescent bulb with which a reflector 64 is associated. As is apparent, due to the pivotal support of the mounting 60 the condenser lens assembly may be swung into and out of position to permit a removal and application of the various masking or mounting plates to the underlying supporting structure.

As shown in Fig. 9 a slide-supporting member may also be disposed in this position. In order to avoid unnecessary illustration this member has been illustrated in its simplest embodiment and includes a main portion 65 formed with a framing aperture 66. Rail or guiding portions 6'! may extend upwardly adjacent the edges of body 65. A detent in the nature of a raised part 68 may be formed in body 65. This will serve conveniently to provide a stop so that the user in pushing slides through the apparatus will know (when he encounters the increased resistance oifered by the stop), that the slide is properly framed. To displace the slide so framed it will only be necessary to exert slight additional pressure so that it may override the detent portion. Accordingly a series of slides may be exhibited by manually traversing them over the surface of body 65. It is apparent that in accordance with conventional techniques a magazine and feeding mechanism (both not shown) might be employed in connection with the slide structure.

In the foregoing structures, excepting only with respect to exhibits displayed and visible through aperture is indicia is silhouetted on transparent surfaces such as glass, cellophane, or paper tape, a similar web, etc. In certain instances, it might be desired to project the image of indicia appearing upon opaque surfaces or bodies which are insufiiciently translucent to employ light rays which pass through them to project images of the printed matter, pictures, etc. through the lens. If such projection is desired, then a structure such as is indicated in Figs. 4 and 5 may be employed. In those views the numeral {is indicates a casing section removably supported as, for example, at E2 and which is employed in lieu of casing section II as heretofore described. The latter is, of course, removed. Within the casing 69 there is disposed a supporting structure or guide in which will be disposed in line with aperture i3 when the parts are properly mounted. Passing over the display station thus furnished is a strip 1! which may be considered to be formed of opaque material and have indicia upon its face arranged in the form of successive lines extending transversely with respect to its body. This web may be discharged from an imprinting machine (not shown) into the casing 69 and within the latter passes over suitable guides 72 and a feed roller i3 so that it traverses the station provided by the mounting l6. Feed roller is may be driven by a motor M and a reduction drive 75. A belt 16 conveniently extends between pulleys to transmit driving force from the roller iii to a receiving reel 1'! for the strip ii. It is thus apparent that the web 'H will. move into casing 69 past the display station and be disposed upon reel l7.

In order to avoid unnecessary illustration, the structure shown in Figs. 4 and 5 has not been enlarged to include provision for the display of indicia extending longitudinally of a narrow tape. It is apparent that such display could be achieved by suitable modification of the parts and rearranging the direction of feed. Returning to Fig. 5, there has been shown at 78 a feed controlling roller which bears against the web i l. This roller may be supported upon an arm l9 movably mounted to control the operation of a switch 86. While this is the only instance in which such a structure has been shown as part of the assembly, it will be understood that similar structures might be employed wherever necessary and be connected to control the functioning of motors such as 74 so that the latter will operate only when adequate web or tape material is entering the casings.

Also with a view of avoiding unnecessary illustration, the present disclosures do not include showings of the obvious wiring diagrams which are embraced in the various units; nor do they show rheostats for controlling the speeds of the motors which feed the strips and tapes and operate the blower 25 and may moreover control the intensity of the light source such as the lamps 22 and 63. Shutters which may interrupt the projection of the light beam have also not been included nor have the various diaphragms been illustrated which might be associated with the lens, openings such as It or it, etc. to con= trol the intensity of the beam. The desirability of such structures will be obvious to anyone skilled in the art.

With the foregoing in mind, it is apparent that in employing an apparatus such as has been shown generally in Figs. 1 to 3, an indicia-bearing broad web may be fed in operative relationship to the condenser assembly 92. With light 63 energized a suitable image will be projected through opening i! onto the surface of mirror 23 and thence through lens 29. Optionally indicia upon a narrow tape or upon successive slides may be thus displayed as may also the face and hands of clock 59. If it is desired to superpose the latter image on the indicia display then the clock may be disposed as indicated in dot and dash lines within the aperture it. Such display will, of course, require the energization of lamps 22. If, under these circumstances, lamp 63 continues to be energized, then the superposed images will be simultaneously projected to the mosaic of the camera arranged beyond such lenses. Obviously if light 63 is extinguished, then only the face of the clock appearing within aperture I3 will be visible.

The face of an opaque clock 33 may also be displayed within this aperture. With the removal of such an obstruction then the interior of easing I i becomes visible through the opening and a single object or a number of objects which may either be stationary or movable will have their images reflected through the opening I3 and the lens 2|. Again superposing of images may be resorted to. Also, as previously brought out, opaque indicia may be displayed through aperture 13 as shown in Figs. 4 and 5. It is apparent that by using the latter arrangement for example in conjunction with the structure which permits of the display of indicia upon a transparent mounting that a picture might be projected to the mosiac and this picture might be traversed by written indicia.

Thus, among others, the several objects or the invention as specifically afore noted are achieved. Obviously numerous changes in construction and rearrangement of the parts might be resorted to without departing from the spirit of the invention as defined by the claims.

I claim:

1. A display apparatus including in combination a main casing, a wall forming a part of said main casing, a removable casing also including a wall, said walls being formed with openings, quick detachable means for securing said casings against movements with respect to each other with said walls disposed adjacent each other and with the openings in alignment, display means within said removable casing and visible within said main casing through said openings, further display means extending into said main casing, means for directing light rays in illuminating relationship against both said display means and objective lens mounting means carried by said main casing for directing light rays from both of said display means to points beyond said main casing.

2. A display apparatus including in combination a main casing, a wall forming a part of said main casing, a removable casing also including a wall, said walls being formed with openings, quick detachable means for securing said casings against movements with respect to each other with said walls disposed adjacent each other and with the openings in alignment, display means within said removable casing and visible within said main casing through said openings, further display means extending into said main casing, means mounted by said main casing for directing light rays in illuminating relationship against both of said display means and a pair of lens mounts supported by said main casing with their axes converging for directing light rays from both of said display means to a common point beyond said main casing.

3. A display apparatus including in combination a main casing formed with lens openings through which lens assemblies project, said casing being also formed with an opening to the rear of said lens openings, a source of illumina=- tion within said main casing to direct light rays through said latter opening, one of said lens openings being in optical alignment with said latter opening, a removable casing formed with an opening to also be aligned with said latter opening and detachable coupling means for securing said removable casing to said main casing.

4. A display apparatus including in combination a main casing formed with lens openings through which lens assemblies project, said main casing being also formed with an opening to the rear of said lens openings, 9. source of illumination within said main casing to direct light rays through said latter opening, one of said lens openings being in optical alignment with said latter opening, a removable casing formed with an opening to also be aligned with said latter opening, detachable coupling means for securing said removable casing to said main casing, an additional casing portion also formed with a projection opening directed into said main casing, a source of illumination within said additional cas ing portion, mechanism also within said addi tional casing portion for projecting light rays through the opening of the same and into said main casing and means for reflecting said latter rays in line with the axis of the second lens opening in the main casing which is to receive a lens assembly.

FRANK E. WELLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 973,962 Oliver Oct. 25, 1910 1,129,693 Kurre Feb. 23, 1915 1,665,426 Verdich Apr. 10, 1928 1,910,989 Hanks May 23, 1933 1,969,461 Hewitt Aug. 7, 1934 1,992,401 Steeneck Feb. 26, 1935 2,019,234 Nistri Oct. 29, 1935 2,140,233 Knudsen Dec. 13, 1938 2,188,896 Eitzen Feb. 6, 1940 2,283,268 Kreinin May 19, 1942 2.419.041 Stewart Apr. 15. 1947 

